Shop tractor



i 9, 1929.- Y B. SQTOCKFLETH ErAL 1,719,857

SHOP TRACTOR Filed Feb. 9, 1925 4 Sheets-Sheet 1 y 1929. B; STOCKFLETH ET AL 1,719,857

SHOP TRACTOR Filed Feb. 9, 1925 4 Sheets-Sheet 2 y 9, 1929. B. STOCKFLETH ETIAL 1,719,857

SHOP TRACTOR Filed Feb. 9, 1925 4 Sheets-Sheet 3 -1, l l. H

IA/m July 9, 1929.

SHOP TRACT OR Filed Feb. 9, 1925 B. STOCKFLETH ET AL 4 Sheets-Sheet 4 J u r Patented July 9, 1929.

. have shown our invention as embodied in a UNITED STATES.

PATENT OFFICE.

' BERGER STOCKFLETH, OF BERRIEN SPRINGS, AND FREDERICK W. BURGER, OF NILE S, MICHIGAN, ASSIGNORS TO CLARK TRUCTRACTOR COMPANY, OF BUCHANAN,

MICHIGAN, A CORPORATION OF MICHIGAN.

SHOP TRACTOR.

Application filed February 9,1925. Serial-N0. 7,948.

be conveniently used in doing other workwithout interfering with. its use for propelling purposes. We accomplish this object as hereinafter described and as illustrated in the accompanying drawings, in which we shop tractor having associated therewith a crane attachment by which loads may be lift-' ed and transported, the devices for associating the crane with the tractor being slmilar 1n construction to those shown 1n our pendlng application, Serial No. 695,536, filed Febru attachment and is actuated manually whereas in our present application the ioisting mechanism is arranged to be 'operated by power supplied by the propelling motor, as will be hereinaftermore particularlypointed out. What-we regard as new is set forth in the claims.

In the accompanying drawings,

Fig. 1 is a side elevation of the greater part of a shop tractor embodying our improvements, showing the crane attachment-apphed thereto and operatively connected with the power transmitting devices;

F' g. 2 is a partial longitudinal vertical section on line 2-2 of Fig. 10, illustrating the construction and arangement of the power transmitting devices, some parts being shown in elevation;

Fig. 3 is a similar view showing a different modified arrangement;

Fig. 4 is a similar view showing another modification;

Fig. 5 is an enlarged sectional view similar to Fig. 2, showing certain details in section; Fig. 6 isa partial longitudinal vertical section on line (i -6 of Fig. 11, illustrating cerline 1010 of Fig. 2; and

tain parts of the power transmitting mecha: msm;

Fig. 7 is'a partial vertical section on line 77 of Fig. 5;

Fig. 8 is a perspective view of one of the spur gears that constitute a part of the controlling mechanism;

Fig. 9 is a perspective view of an internal gear that is shiftable to vary the power transmitting connections;

Fig. 10 is a partial vertical cross-section on FigJll is a artial horizontal section on line 11-11 of Fig. 10.

Our improved shop tractor in the form illustrated in thedrawings comprises a main frame 12 supported at its ends on wheels, the wheels at one end, which for convenience of description will be termed the rear end, being arranged to' be propelled by power, while the wheel or wheels at the other, or front end are dirigible for steering purposes. It should be understood, however, that the terms 4 front and rear as herein used are relative merely, as the tractor may be driven indifferently in either direction. We have not illustrated the propelling wheels, as such wheels may be attached to the frame in any suitable way, and it will'sufiice to 'say that they are arranged to be driven by means of a propeller shaft operating through the usual differential gearing. A slngle dirigible wheel 0 is preferably used for supporting the opposite end of the frame, said wheel being mounted to turn about a vertical spindle for'guiding purposes, the spindle being suitably journaled in the frame in the median line thereof. In Fig. 1 13 indicates said dirigible wheel, and 14: a steering wheel for controlling its position. The connections between the steering wheel 14 and the wheel 13-may be of any approved design. An upright metal plate 15 is preferably provided at the front end of the frame 12, which serves not only. as a shield or dashboard, but also as an abutment when the tractor is used for pushing other vehicles.

Adjacentto the steering wheel 14 is a hood means of a flexible propeller shaft comprising ointed members 18 and 19 connected by auni- I 'versal coupling 20, as shown in Fig. l, the

' front member 19 being connected at its forward end by a universal coupling 21 with a brake pulley 22 shown in Fig. 2. Said pulley is mounted upon and keyed to a drive shaft 23 mounted in anti-friction bearings 24, 25 supported by the frame of the tractor. In the construction shown the bearing 24'is mounted in a sleeve 26 that is integral with a housing 29 firmly secured to the tractor frame in any suitable way, and the bearing 25 is mounted in an annular flange 27 carried by a head 28 that is detachably secured to the .front wall of said housing, as best shown in Fig. 2.

The housing 29 forms a chamber30 that is adapted to contain lubricating oil for lubrieating the parts mounted therein. A remov able plug 31 is provided at the bottom of said chamber, so that the oil may be drained out when desired. The brake hereinbefore referred to is shown at 32 in Fig. 2, and is arranged to cooperate with the brake pulley or drum 22 so that the brakin strains are applied directly to the propel er and driving shafts.

The tractor illustrated is designed to be driven by means of an internal combustion motor A of the typecommonly used for motor vehicles, and therefore we have not considered it necessary to illustrate it, but it will be understood that-the motor is mounted on the main frame back ofand adjacent to the hood 16, which overlies the transmission.

mechanism with which our present invention is more immediately concerned. Referring now to Fig. 5, 33 indicates a power shaft that is driven from-its inner or rear end by the motor preferably through intermediate gearing, such, for example, as a conventional selective speed transmission mechanism, which we have indicated in its entirety at B in Fig. 2. This transmission mechanism may be of any standard construction such as is ordinarily used on automobiles ortractors, and hence need not be described in detail. It will sufiice to 'say that the shaft 33 has the usual pair of shiftable'gears B mounted thereon, which are adapted to mesh selectively. with cooperating gears B on a countershaft B which is journaled in the housing B. of the transmission unit. Reverse drive is eifected through the usual reazerse drive pinion (not shown) which is driven by one of the 'countershaft gears B, and which is adapted to be engaged by one of the shiftable gears B The shifting'of the two gears 13* on the shaft 33 is effected through a conventional control lever acting on the gears through the usual shifter members. This transmission mechanism thus serves to control the speed and the direction of rotation of the power shaft 33. It will be understood that a.v conventional form of clutch is interposed between the engine A and the transmission' unit B for controlling the transmission of power to said latter unit.

The power shaft extends forwardly from the transmission housing B into a housing 35 which is superposed on and joins with the upper portion of the housing 29, said shaft having support in a suitable bearing 34 pref erably carried by the transmission housing B. The forward end of said shaft is reduced in diameter and is externally screwthreaded, as shown at 36 in Fig. 5, and screws into the inner end of a sleeve 37, the opposite end rtion of which is mounted in ant-ifriction bearings 38 supported by the housing 35. A screw plug 39 is'screwed into the latter end of said sleeve and abuts against the proximate end of the shaft 33 so that it serves as a lock nut to prevent rotationof said sleeve relatively to said shaft. Said sleeve is provided with a peri heral flange 40 at the inner side of the anti: rietion bearing 38 to hold said sleeve against endwise movement.

Loosely mounted on the shaft 33 adjacent to the bearin 34 is a spur gear 41, a bushing 42 being preferably interposed between said gear and the shaft 33, as shown in Fig. 5. The construction of the rear gear 41 is best shown in Fig. 8,. from which it will be seen that it is provided with two sets of teeth, the teeth 43 of one set being of the usual spur gear type, while the teeth 44-of the other set are rounded. The corresponding teeth of the two-sets are alined with each, other, and are best made integral with each other, as shown in Fig. 8, and the gear 41 is mounted on the shaft 33 in such position that the teeth 44 are in front of the teeth 43, that is to say, are

nearer the front end of thes'haft 33.

Also mounted on the shaft 33 adjacent to and in front of the gear 41 is a sleeve 45, said sleeve being non-rotatably secured to said shaft in any suitable way, as-by means of a.

-wise' movement relatively to the shaft 33.

The rear portion of the sleeve 45 is provided with external longitudinally disposed ribs 47, best shown in Fi 7 ,and between the forward. ends of said ribs and the front end of .the sleeve 45 a front gear 48 is loosely mount-- ed on said sleeve. Said front gear is similar in construction to the rear gear 41, but it is is a collar 52 that is arranged to slide back and forth on said sleeve between the gears 41 and 48; As best shown in Figs. 5 and 9, said collar is provided centrally with an internally projecting flange 53 having grooves 54 to receive the ribs 47, and at its ends it is provided with sockets 55 adapted to receive the rounded teeth 44, 50 of the gears 41, 48 to cause one 4 or the other, or both, of said gears to rotate in unison with said collar. Obviously, inasmuch as the sleeve 45 is keyed to the shaft 33, and the collar 52 is keyed to the sleeve 45, when the shaft 33 rotates the collar 52 will rotate in unison therewith, and therefore by connecting said collar with either of the gears 41 or 48, the gear with which it is connected will rotate with it. In the arrangement illustrated in Fig. 5 the collar 52 is long enough so that when it 'is in its central position between the gears 41, 48 it will mesh with both of them at the same time, and conse uently at that time both the gears 41, 48 will e driven by it. By moving the collar 52 to the left as viewed in Fig. 5, it will disengage the gear 41 and engage only the gear 48,'whereas by moving it in the opposite direction from its central position said collar will engage only the gear 41. It will be apparent, therefore, that either of said gears may be driven alone by the shaft 33, or they may be driven thereby in unison. It will be apparent, also, that with the arrangement shown in said figure one or the other of said gears must be driven when theshaft 33 rotates.

In Fig. 4 we have illustrated a modified arrangement comprising a collar 52 that is enough shorter than the collar 52 so that when it is in its central position it does not overlap the gears 41, 48. Consequently with such modified arrangement the shaft 33 may be rotated without rotating either of said gears, as may be desirable in some constructions For shifting the collar 52 endwise, to con-, nect either of the gears 41, 48 alone with the shaft 33 in the arrangement shown in Fig. 5, we provide a head 56 that is mounted to slide longitudinally upon a rod 57 secured in the housing 35 in a horizontal position over and in the longitudinal vertical plane of the shaft 33. Said head is provided with a downwardly extending arm 58 providedwith a finger 59 that projects into a circumferential groove 60 in the collar 52, thereby holdingsaid collar against fore and aft movement relatively. to the head 56 without, however, interfering with the rotation of said collar. Said head is also provided with an upwardly extending boss 61 having a socket 62 that receives a rod or head 63 at the lower end of an arm 64 that depends from a sleeve 65, asshown in Fig. 5. Said sleeve is mounted upon and keyed to a shaft 66 that extends into a housing 67 that forms an upward extension of the housing 35 and is secured thereto by bolts 67 shown in Fig. 7. The outer end of the shaft 66 carries a lever 68 by which it may be rocked to swing the arm 64 fore and aft, thereby moving the head 56 similarly.

By thisarrangelnentthe operator may shift the collar 52 longitudinally of the shaft 33 in either direction by means of the lever 68. The head. 56 is yieldingly held in its different positions of ad ustment by means'of a detent comprising a hardened steel ball 69 that is adapted to be seated in either of three annular grooves 70 formed in the rod 57, as shown in Figs. 5 and 7, or in either of two similar grooves, as shown in Fig. 3, said ball being pressed into its seat by a coiled spring 71 fitted in a pocket 72 in the arm 58. In the modifica- ..tion shown in Fig. 3 the collar 52-is always in engagement with one or the other of the gears 41, 48, and, therefore, only two grooves 70 are required. The tension of the spring 71 suffices to hold the head 56 against accidental movement on the rod 57, but does not interfere with its adjustment 'by theoperator. An opening is provided at the upper end of the housing 67 that may be closed by a plug 7 3,

tractor, to which end it meshes with an inj termediate gear 76 journaledin the lower portion of the housing 35. Said intermediate gear in. turn meshes with a gear 77 mounted on and keyed to the shaft 23, as shown in Fig.

'2. Said shaft, therefore, has a driving connection with the gear 48, and as said shaft is connected with the propelling wheels through the propeller shaft members 19 and 18, it will be apparent that when the collar 52 is in operative engagement with the gear 48 the propellin'g wheels will be rotated, and not otherwise.

The function of the gear 41 is to transmit power from the shaft 33 for purposes other than the propulsion of the tractor. To' that end the teeth 43 of said gear mesh with the teeth of a spur gear 78 mounted on astud 7 9 that is mounted in the housing 35, as shown in Figs. 6 and 11, and the latter gear in turn meshes with a gear 80 mounted on and keyed to a shaft 81. The latter shaft is journaled in suitable bearings provided at the juncture Sprocket wheel 91' and varying the tension of the link belt 86 accordingly. The ec'cen-,

' therefrom.

of a separable extension 82 of the housing 35 and a housing 83 that is secured to the extension 82,'as best shown in Fig. 6. Preferably the extension 82 and housing 83 are secured together and to the housing 35 by bolts 84, as shown in said figure. Also mounted on and keyed to the shaft 81 is a sprocket wheel 85 thatdrives a link belt 86 running over said sprocket wheel and over another sprocket wheel 87 that is carried by a tubular shaft 88 parallel with the shaft 81 and mounted at the other end of the housing 83. Preferably antifriction bearings 89, 90 are provided for supporting the tubular shaft 88, as shown in Fig. 11. The chain 86 also runs over an idler sprocket wheel 91 that is loosely mounted on a shaft 92, the latter shaft being non-rotatably secured to eccentrics 93, 94 mounted at opposite sides of the housing 83, as best shown in Fig. 11. By rotating said eccentrics it will be'apparent that the shaft 92 may be moved vertically, thereby raising or lowering the tries 93, 94 are provided with discs 95, 96, best shown in Figs. 10 and 11, which discs are provided with holes 97 adapted to receive bolts 98 for securing the eccentrics in their different positions of adjustment.

The tubular shaft 88 is provided on its inner surface with longitudinal ribs 99, and mounted in said shaft to slide longitudinally thereof is a ribbed power take-01f shaft 100, best shown in Fig. 11. In the illustrated construction said shaft extends forward from the tubular shaft 88, and at its forward end it extends into and has non-rotatable connection with the hub 101 of a disc 102-tliat constitutes one member of a flexible coupling by which said shaft is connected to a power transmitting shaft 103 that extends forward The shaft 100 is connected with the hub 101 by means of a cap 104 rotatably mounted on said shaft and adapted to screw on external screw threads provided on the hub 101. Between the cap 104 and the proximate end of the hub 101 is a collar 105 fixed on the shaft 100 so Lhat said cap serves to prevent endwise movement of the shaft 100 relatively to the hub 101. The shafts 100 and 103 are flexibly connected together by means of flexible discs 106 that are secured to the disc 102 at equidistant points by bolts 107, and are also secured by bolts 108 at points lying between-the bolts 107 to a disc 109 nonrotatably secured to the rear end of the shaft 103, preferably by a pin 110, as best shown in Fig. 11. By this construction the shaft 103 may be driven from the shaft 33 either while the tractor is being propelled or While it is not in motion, and also the tractor may be propelled without driving the shaft 103. As the shaft 100 has telescopic engagement with the tubular shaft 88, it may move endwise to accommodate end thrust in either direction on the shaft 103 without interfering with the driving of'the latter shaft. The shafts 100 and 103, therefore, together constitute a flexible power take-off shaft that is also movable endwisewith reference to the sprocket sprocket wheel 87.

The construction described is well adapted for use in transmitting power from the tractor motor to power driven mechanism capable of moving in one-direction or another relatively to the tractor frame, and in the embodiment of our invention we have shown the power take-ofl mechanism arranged to drive the hoisting mechanism of a crane associated with the tractor substantially as shown and described in our pending application 695,536, hereinbefore referred to. To that end the shaft 103 is connected by a flexible coupling 111 with a shaft 112 that carposed in a substantially horizontal position at the front of the tractor frame and having its rearwardly extending ends connected with the side portions of the tractor frame by spring members 115 and bolts 116, as shown in Fig. 1, and as described in our said application No. 695,536. The front portion of the yoke 114 is supported by caster wheels 117 -j0urnalledin yokes 118 swiveled in bearings 119 at opposite sides of the front portion of said yoke. Mounted on the yoke 114 1s a beam or mast 120 carrying pulleys 121, 122, 123 over which runs a hoisting chain 124. Said chain also runs around a pulley 125 mounted on a shaft 126 on which is also mounted a worm wheel127 that meshes with the worm carried by'the shaft 112, the arrangement being such that rotation of the shaft 112 rotates the pulley 125 in one direction or the other, thereby taking up or paying out the hoisting chain 124. Obviously as the crane attachment is supported on the cas-' ter wheels 117, and is flexibly connected with the tractor frame, it may move vertically relatively to the tractor frame, but owmg 'tojhe flexible connections between the hoist-- ing mechanism and the power plant of the tractor movement of the crane attachment relatively to the tractor frame does not affect the operation of the power transmitting connections. The hoisting devices illustrated in Fig. 1 constitute no part of the invention that forms the subject matter of the present application, but are the subject matter of a separate application filed by us of even'date herewith,Serial No. 7 ,946, and we wish it to be understood that so far as our present invention 'is concerned, broadly considered it contem-- plates the association with the power transmitting devices described of any other mechanism adapted to be operated thereby.

F rom the'foregoing description, it will be seen that we have provided means by which the motor that operates the'tractor may con; veniently be employed either to drive the tractor alone, to drive other mechanism associated with the tractor without propelling the tractor, or to do both at thesame time, and that our improved construction is particularly adapted for use in driving other mechanism associated with the tractor and capable of or subject to movement relatively to the tractor frame. It is also well adapted ,for driving power driven mechanism carried by a separa le attachment, such as the crane attachment shown, designed to be associated with or disconnected from the tractor frame, since the shaft 100 may readily be applied to or withdrawn from the tubular shaft 88 without disarranging the devices by which power is transmitted to the latter shaft, or the connections between the power driven mechanism and the shaft 100.

It-will also benoted that the interposition of the selective speed transmission mechanism Bbetween the engine A and the power drive to the crane attachment permits the hoistiiw mechanism of the crane to be driven at di ferent speeds for hoisting, and permits the hoisting mechanism to be driven in a reverse direction for lowering the load under the control of the operator through the transmission mechanism B and engine clutch.

So far as we are aware, we are the first in the art to provide a motor vehicle, such as a tractor, with power driven mechanism, as for example a crane, associated with the tractor so as to be propelled thereby, and capable of moving vertically relatively to the tractor I frame, inconnection with power transmitting means driven by the tractor motor such that -the proper functioning of the power transmitting connections is not affected by vertical movement of the power driven mechanism relatively to the tractor frame, and the claims hereinafter made are therefore to be construed accordingly. In other respects also our invention is not limited to the precise construction shown and described, except in so far as claims may be directed thereto,'but includes such changes or modifications -as would occur to those skilled in the art.

What we claim as our invention and desire to secure by Letters Patent, is v 1. In a motor vehicle .comprising a frame, propelling and dirigible wheels supporting said frame, and,a motor moiinted on said frame, the combination with a power shaft,

means for operatively, connecting the rear end of said shaft with said motor, and a propeller shaft mounted on the frame and operatively connected at the rear with the propelling wheels, of front and rear gears loosely mounted concentrically with said power shaft, intermediate gearing operatively conmeeting the front gear with the propeller shaft, 0. power talte-ofl shaft, intermediate mechanism for driving said power take-off shaft from therear gear and means for makmg a driving connection between either of said gears and the power shaft.

2; In a motor vehicle comprising a frame,

propelling and dirigible wheels supportin said frame, and a motor mounted on sai frame, the combination with a power shaft, means for operatively connecting the rear end of said shaft with said motor, and a proso peller shaft mounted on the frame and operatively connected at the rear with the propelling wheels, of front and rear gears loosely mounted concentrically with said power shaft, intermediate gearing operatively conmeeting the front gear with the propeller shaft a power take-off shaft, intermediate mechanism for driving said power take-oft shaft from the rear gear and means for making a driving connection between either of said gears and the power shaft, or-for driving both of said gears simultaneously in unison with said power shaft.

3. In a motor-vehicle comprising a frame, propelling and dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a power shaft, means for operatively connecting the rear end of said shaft with said motor, and a propeller shaft mounted on the frame and opera- 10o tively connected with the propelling wheels,

.either of said gears and the power shaft.

4. In amotor vehicle comprising a frame, propelling and dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a power shaft,

transmission gearin for driving said shaft from said motor, an a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of gears loosely mounted concentrically with said power shaft, intermediate gearing operatively connecting one of said gears with the propeller shaft, a power take-off shaft, intermediate mechanism for driving said power take ofi shaft from the other of said gears, and means for making a driving connection between either of said gears'a-nd the power shaft.

5; In a motor vehicle comprising a frame, propelling and dirigible wheels supporting said frame, and a motor mounted on said transmission gearing for drivin said shaft from said motor, and a propeller shaft mounted on theframe and operatively connected with the propelling wheels, of gears loosely mounted concentrically with saidpowershaft,

intermediate gearing operatively connecting one of said gears with the propellerishaft, a flexible longitudinally movable power takeoff shaft, intermediate mechanism for driving said power take-off shaft from the other of said gears, and means for making a driving connection between either of said gears and the power shaft. v

6. In a motor vehicle comprising a frame, propelling and dirigible wheels supportin said frame,"and a motor mounted on sai frame, the combination with a power shaft, transmission gearing for drivin said shaft from said motor, and a propeller shaft mounted on the-frame and operatively connected with. the propelling wheels, ofgears loosely mounted concentrically with said power shaft,

intermediate gearing operatively connecting one ofsaid gears with the propeller shaft, a power take-ofi' shaft, intermediate mechanism for driving said power takeoif shaft from the other of said gears, and means for makin a driving connection between either of sai gears and the power shaft, or for driving both ofsaid gears simultaneously in unison with said power shaft.

7. In a motor vehicle comprising a frame,

' propelling and dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a power shaft, transmission gearing for driving said shaft from said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of gears loosely mounted concentrically with said powershaft, intermediate gearing operatively connecting one of said "gears with the pro eller shaft, a power take-ofi' shaft,interme iate mechanism for'driving said power take-off shaft from the other of said gears, and means mounted on and rotating with said power shaft between said gears and movable longitudinally of said shaft to operatively connect either of said gears .with said power shaft. i a

' 8. In a motor vehicle comprising a frame,

pro elling and dirigible wheels supporting sai frame,andamotormountedonsai frame,

-thecombination with a power shaft, transmission gearin for driving said shaft from said motor, an a propeller shaft mounted on the frame and operatively connected with the vpropelling wheels, of gears loosely mounted concentrically with said power shaftgiriter;

mediate gearing operatively connecting one of said gears with the propeller shaft,"a power take-off shaft, intermediate mechanism for driving said power take-ofi shaft from the other of said gears, and means mounted on and rotating with said power shaft between said gears and movable longitudinally of said shaft tooperatively connect either of said ears with said power shaft, or to connect both of said gears simultaneously with said power shaft.

9. In a motor vehicle comprising a frame, propelling and dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a power shaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of a sleeve mounted on and keyed to said power shaft, a collar movable longitudinally on said sleeve and rotating therewlth, a gear loosely mount-- ed on said sleeve at one side of said collar, intermediate gearing operatively connecting said gear with the propeller shaft, a second gear loosely mounted on said power shaft at the opposite side of said collar, said collar power take-off shaftfrom said 10. In a motor vehicle comprising a frame,-

pro elling and dirigible wheels supporting sai frame, and a motor mounted on said frame, the combination with a power shaft 1 driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of gears loosely mounted concentrically with said,

powershaft, intermediate gearing operativelyconnecting one of said gears with the propeller shaft, a power take-off shaft, intermediate mechanism for driving said power take-off shaft from the other of said gears, 7

comprising a sprocket wheel operatively connected with said power take-off shaft, a sprocket wh eel driven by the latter gear, and a belt operating over said sprocket wheels, and means mounted on and rotating with said ower shaft between said gears and movable ongitudinal ly of said shaft to operatively connect either of said gears with said power shaft.

11. In a motor vehicle comprising a frame, pro elling and dirigible wheels supporting sai frame, and a' motor mounted on said frame, the combination with a power shaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of a sleeve mounted on and keyed to said power shaft, a

collar movable longitudinally on said sleeve and rotating therewith, a gear loosely mount- 7 having teeth adapted to mesh with the teeth of said gears whereby by means of said collar either of said gears may be connected to rotate with said power shaft, a power takeoff shaft, intermediate mechanism for driving said power take-off shaft from said second gear, comprising a sprocket wheel geared to said second gear, a sprocket wheel operatively connected with said power takeoff shaft, and an endless belt operating over said sprocket wheel.

' 12. In a motor vehicle comprising a frame, propelling and dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a power shaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of gears loosely mounted concentrically with said power shaft, intermediate gearing operatively connecting one of said gears with the pro-.

peller shaft, a power take-off shaft, inter mediate mechanism for driving said. power take-off shaft from the other of said gears, comprising a sprocket wheel telescopically connected with said power take-ofi' shaft, a

sprocket wheel driven from the latter gear, and a belt operating over said sprocket wheels, and means mounted on and rotating with said power shaft between said gears and movable'longitudinally of said shaft to operatively connect either of said gears with said powershaft:

13. In a motor vehicle comprising a frame, propellingand dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a powershaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of gears loosely mounted concentrically with said power shaft, intermediate gearing operatively connecting one of said gears with the propeller shaft, a power take-ofl' shaft, intermediate mechanism for driving said power take-off shaft from the other of said gears,

means mounted on and rotating with said power shaftbetweemsaid gears and movable longitudinally of. said shaft to operatively connect either of said gears with said power shaft, comprising a grooved collar having teeth adapted to engage the teeth of said gears, a shaft parallel with said power shaft,

a head mounted to move longitudinally on said parallel shaft and having an arm engag- .ing the groove in said collar, means for moving said head longitudinally of said parallel shaft, and means foryieldingly holding said head in its different positions of adjustment.

14. In a motor vehicle comprising a frame, propelling and dirigible wheels supporting said frame, anda motor mounted on said frame, the combination'with a power shaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected withthe propelling wheels, of gears 'loosely' mounted concentrically with said power shaft, each of said gears having a set 'ofspurteeth and a set of rounded teeth, said gears being-oppositely vdisposed .with their rounded teeth innermost, a collar mounted on and rotating with said power shaft between said gears and having teeth adapted to mesh with the rounded teeth thereof, intermediate gearing operatively connecting the spur teeth of one of said gears with the propeller shaft,

a power take-off shaft, and intermediate mechanism geared to the spur teeth of the other of said gears and connected with said powertake-olf shaft for driving'the same.

15. In a motor vehicle comprising a frame, propelling and 'dirigible wheels supporting said frame, and a motor mounted on said 'frame, the combination with a power shaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of a sleeve having screw-threaded engagement with one end of said power shaft, means for securing said sleeve on said power shaft, gears loosely mounted concentrically with said power said frame, and a motor mounted on sai frame, the combination with a power shaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of a sleeve mounted on said power shaft and rotating therewith, a gear loosely mounted on said sleeve, a collar mounted on and rotating w1th said sleeve and having teeth adapted to engage the tceth of said gear, an internallyv threaded sleeve screwed upon the end of said power shaft and having a. flange bearing against said first-mentioned sleeve, means for securing said threaded sleeve on said power shaft, a housing, and a bearing for the latter sleeve supported by said housing.

17 In a motor vehicle comprising a frame, propelling and dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a power shaft,

vtransmission gearing fordriving said shaft from said motor, and a propeller shaft mounted on the frame and operatively connected with the pro elling wheels, of a housing carried by said rame, a drive shaft journalcd in said housing, means .fiexibly connecting said drive shaft with said propeller shaft, a gear loosely mounted in said housingconcentrically with said power shaft, intermediate gearing in said housing operatively connecting said gear with said drive shaft, and means frame, the combination with a power shaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of gears loosely mounted concentrically with said power shaft, intermediate gearing operatively connecting one of said gears with the propeller shaft, a flexible power take-off shaft comprising two members flexibly coupled together, intermediate mechanism for driving said power take-off shI-aft from the other of said gears comprising a sprocket wheel driven by the latter gear, said power take-ofit' shaft being movable longitudinally relatively to said sprocket wheel, and means for making a driving connection between either of said gears and-the power shaft.

19. In a motor vehicle comprising a frame, propelling and dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a power shaft driven by said motor, transmission mechanism for controlling the direction of rotation of said power shaft and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of power driven mechanism comprising .a wheel supported frame associated with said tractor frame and propelled thereby, said wheel supported frame being adapted to move vertically relatively to the tractor frame, and power transmitting means driven by said power shaft for driving said power driven mechanism. I

20. In a motor vehicle comprising a frame,

propelling and dirigible Wheels supporting said frame, and a motor mounted ,on said frame, the combination with a power shaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of power driven mechanism comprising a wheel supported frame flexibly connected with the tractor frame so as to be propelled thereby, and to be movable vertically relatively thereto, means for driving said power driven mechanism is either direction from said motor, and means for driving the propeller shaft from said motor independently of the driving of said power driven mechanism.

21. In a motor vehicle comprising a frame, propelling and dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a power shaft driven by said motor, and a propeller shaft mounted on the frame and o eratively connected with the propelling wfieels, of power driven mechanism comprising a wheel supported frame flexibly connected with the tractor frame so as to be propelled thereby, and to be movable vertically relatively thereto, means for driving said power driven mechanism in either direction of rotation from said motor, and means for driving the propeller shaft mounted on the frame and operatively connected with the propelling wheels, ofa wheel supported frame detachably connected with the tractor frame to move vertically relatively thereto, and to be propelled thereby, power driven mechanism carried by said detachable frame, and detachable connectionsfor driving said power driven mechanism from said power shaft.

23. In a motor vehicle comprising a frame, propelling and dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a power shaft driven by said motor, transmission mechanism for controlling the speed and direction of rotation of said power shaft and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of a wheel supported frame flexibly connected with the opposite sides of the tractor frame to move vertically relatively thereto, and to be propelled thereby, power driven hoisting mechanism carried by said detachable frame, and detachable connections for driving said hoisting mechanism from said power shaft.

24. In a motor vehicle comprising a frame, propelling and dirigible wheels supporting said frame, and a motor mounted on said frame, the combination with a powershaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of a wheel supported frame detachably connected with the tractor frame and propelled.thereby, powerdriven mechanism carried by said dc.- tachable frame, detachable connections for driving said power driven mechanism from said motor comprising power transmitting devices adapted 'to be operatively connectedwith said power shaft, and a shaft connected with said power driven mechanism and telescopically connected with said power transmitting devices.

25. In a motor vehicle comprising a frame,

propelling and dirigible wheels supporting,-

said frame, and a motor mounted on said frame, the combination with a power shaft driven by said motor, and a propeller shaft mounted on the frame and operatively connected with the propelling wheels, of a wheel transmitting devices adapted to be 0 erativesupported frame flexibly and detachably c0nly connected with said power sha t, and a nected with the tractor frame and propelled shaft flexibly connected with said power driv- 10 thereby, power driven mechanism carried by en mechanism and telescopically connected 5 said detachable frame, detachable connecwith said power transmittlng devices.

tions for driving said power driven mecha- BERGER STOCKFLETH. nism from said motor comprising power FREDERICK W. BURGER. 

